英语的主要方言在发音上有明显的差异，但在拼写上差异较小。一般人们使用一些学术机构的词典作为标准英语。让我们看看高中英语知识要点.
高中英语知识要点(1)
什么叫句子成分呢?句子的组成成分叫句子成分。在句子中，词与词之间有一定的组合关系，按照不同的关系，可以把句子分为不同的组成成分。句子成分由词或词组充当。现代汉语里一般的句子成分有六种，即主语、谓语、宾语、定语、状语和补语。英语的基本成分有七种：主语(subject)、谓语(predicate)、表语(predicative)、宾语(object)、定语(attribute)、状语(adverbial)和补语(complement)。
英语句子的基本结构可以归纳成五种基本句型及其扩大、组合、省略或倒装。掌握这五种基本句型，是掌握各种英语句子结构的基础。
英语五种基本句型列式如下：
一： S V (主+谓)
二： S V P (主+系+表)
三： S V O (主+谓+宾)
四： S V o O (主+谓+间宾+直宾)
五： S V O C (主+谓+宾+宾补)
主语：可以作主语的成分有名词(如boy)，主格代词(如you)，动词不定式，动名词等。主语一般在句首。注意名词单数形式常和冠词不分家!
谓语：谓语由动词构成，是英语时态、语态变化的主角，一般在主语之后。不及物动词(vi.)没有宾语，形成主谓结构，如：We come.此句型的句子有一个共同特点，即句子的谓语动词都能表达完整的意思。这类动词叫做不及物动词，后面可以跟副词、介词短语、状语从句等。
高中英语知识要点(2)
1.What do you know about infectious diseases?
你对传染性疾病了解多少?
2.John Snow was a famous doctor in London – so expert, indeed, that he attended QueenVictoria as her personal physician.
约翰?斯诺是伦敦一位著名的医生——他的确医术精湛，因而成为维多利亚女王的私人大夫。
3.But he became inspired when he thought about helping ordinary people exposed tocholera.
但当他一想到要帮助患了霍乱的普通老百姓，他就感到很振奋。
4.Neither its cause, nor its cure was understood.
人们既不知道它的病源，也不了解它的治疗方法。
5.He knew that cholera would never be controlled until its cause was found.
他知道，在找到病源之前，霍乱疫情是无法控制的。
6.The second suggested that people absorbed this disease into their bodies with theirmeals.
第二种看法是在吃饭的时候人们把这种病毒引入体内的。
7.John Snow suspected that the second theory was correct but he needed evidence.
约翰?斯诺猜想第二个理论是正确的，但他需要证据。
8.It seemed that the water was to blame.
看来要归罪于饮用水了。
9.He immediately told the astonished people in Broad Street to remove the handle from the pump so that it could not be used.
约翰?斯诺马上叫宽街上惊惶失措的老百姓拆掉水泵的把手，这样水泵就用不成了。
10.In another part of London, he found supporting evidence from two other deaths thatwere linked to the Broad Street outbreak.
在伦敦的另一个地区，他从两个与宽街爆发的霍乱有关联的死亡病例中又发现了有力证据。
高中英语知识要点(3)
1. be doing/ be about to do/be on the point of doing/had done…,when…(when：这时， 强调一个动作的突然发生)
1) I was walking along the river, when I heard a drowning boy cry for help.
2) I was about to leave when it began to rain.3) I had just finished my test paper when the bell rang, announcing the exam was over.
2. It was(not) +时间段+before +一般过去时“过了一段时间就……”It will(not) be+时间段+before
+一般现在时“要过一段时间才会……”It is/ has been +时间段+ since…It was+点时间+ when…It was+时间状语+that…(强调句)
1) It was not long before he sensed the danger of the position.不久他就意识到他处境危险。(动作已发生)
2) It will be half a year before you graduate from the school.还有半年你才从这个学校毕业。(动作未发生)
3) It is 3 years since he worked here.=he left here.(since从句中的谓语动词若是延续性动词，要从这个动作结束的时候算起)
4) It was 3 o’clock when they received the telephone.
5) It was at 3 o’clock that they received the telephone.
3. once… 一旦……，表示时间和条件
1) Once you start, you will never give up.
2) Once you understand what the teacher explained, you will have no difficulty doing the work.
4. the +比较级……，the +比较级……“越……越……”The more books you read, the more knowledge you will get.
5. whether…or…无论是……还是……
1) Whether the weather is good or bad, they will set off as they planned.
2) Any person, whether young or old, has his own worth.
高中英语知识要点(4)
我们都知道学习英语最重要的就是时态的语法学习。如果语法学得特别好，对英语写作非常有帮助，而且还可以考高分。
现在进行时
1.表示现在 (说话瞬间)正在进行或发生的动作。
[例句] He is reading a newspaper now.
2.表示当前一段时间内的活动或现阶段正在进行的动作 (说话时动作不一定正在进行)。
[例句] What are you doing these days?
3.表示说话人现在对主语的行为表示赞叹或厌恶等,常与always, constantly, continually等副词连用。
[例句] He is always thinking of others.
4.表示在最近按计划或安排要进行的动作。常限于go, come, leave, start, arrive等表“移动”、“方向”的词。
[例句] He is coming to see me next week.
过去进行时
1.表示过去某时正在进行的动作。
[例句] He was sleeping when Mary came to see him.
2.动词go, come, leave, arrive, start等的过去进行时常表过去将来时。
[例句] She said she was going to Beijing the day after tomorrow.
一般现在时
1.表示现在习惯或经常反复发生的动作或存在的状态,常与usually, always, sometimes, often, every day /week / month / year等时间状语连用。
[例句] He often does his homework in his study.
2.表示主语现在的特征、性格和状态。
[例句] The dictionary belongs to me.
3.表示客观规律或科学真理、格言,以及其他不受时间限制的客观存在。
[例句] The moon goes around the sun.
4.在有连词if, unless, before, as soon as, when, once,however等引导的时间、条件和让步状语从句中,用一般现在时表将来。
[例句] If you work hard, you won’t fail in the exam.